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[Success] GIGABYTE Z370 Gaming 7 + Intel Core i7-8700K + RX 580 + (2x) Dell P2715Q 4k @ 60Hz

Joined
Sep 21, 2013
Messages
419
Motherboard
GA-Z370 AORUS Gaming 7-F13
CPU
i7-8700K OC 4.6 GHz
Graphics
RX 580
Mac
MacBook, MacBook Pro, Mac mini
Classic Mac
Classic, iBook, Performa, Power Mac
Mobile Phone
Android, iOS
https://support.microsoft.com/en-us/help/4090007/intel-microcode-updates , https://newsroom.intel.com/news/latest-intel-security-news-updated-firmware-available/ .
Microcode updates might be bug fixes, or in this case, security patches. sometimes simply updating microcode of cpu can restore some cpu performance because the Os can detect the hardware vulnerability is patched and disable software patches/work arounds that can cause performance drops. Not sure if macOS wil specifically look for things like that but windows will. Windows will detect microcode version of cpu and if it's > x revision it'll disable software patches.
since F12 specifically mentions microcode, it's a pretty strong assumption that it's the January security patch referenced here.
So here's a dumb question: Is it worth an increased error rate to go from F11 to F12 if the machine's SIP is disabled? -I'm not signed into any Cloud services, but I do use Screen Sharing via ethernet to "tunnel" into a real Mac and use those Cloud accounts.
 
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Joined
Jan 16, 2011
Messages
570
Motherboard
Z390 AORUS PRO
CPU
i7-8700K OC 5.0GHz
Graphics
Vega 64 + eGPU: 2 x RX 580
Mac
MacBook Air
Mobile Phone
Android, iOS, Other
Good to know. I'm currently booting macOS from a SSD, but have 2 x NVMe M.2 in system.... might try reorganizing things and move macOS back to one of the NVMe.
Thanks for the feedback!
Been diverted all day on other issues, but I had time late yesterday to try F12 with macOS on one of my NVMe M.2's with a brand new Mojave 10.14.3 install. No go!
So back on F11 ATM...
 
Joined
Jun 15, 2012
Messages
418
Motherboard
Z370 AORUS Gaming 7 - F11
CPU
i7-8700K OC @ 5.1Ghz
Graphics
GTX 1080 Ti
Mac
MacBook Pro, Mac Pro
Classic Mac
Performa
Mobile Phone
iOS
So here's a dumb question: Is it worth an increased error rate to go from F11 to F12 if the machine's SIP is disabled? -I'm not signed into any Cloud services, but I do use Screen Sharing via ethernet to "tunnel" into a real Mac and use those Cloud accounts.
I'm actually thinking of using a patched F11 that's F11 version, but with updated microcode. you can find modified bios like this with some searching.
 
Joined
Jun 15, 2012
Messages
418
Motherboard
Z370 AORUS Gaming 7 - F11
CPU
i7-8700K OC @ 5.1Ghz
Graphics
GTX 1080 Ti
Mac
MacBook Pro, Mac Pro
Classic Mac
Performa
Mobile Phone
iOS
And done. On a modded F11 with all latest CPU microcode updates that patch all latest meltdown and spectre and Retpoline variants and what nots. I wonder if macOS is smart enough to disable the CPU eating work arounds or not though when it's mitigated at cpu level.
 
Joined
Sep 21, 2013
Messages
419
Motherboard
GA-Z370 AORUS Gaming 7-F13
CPU
i7-8700K OC 4.6 GHz
Graphics
RX 580
Mac
MacBook, MacBook Pro, Mac mini
Classic Mac
Classic, iBook, Performa, Power Mac
Mobile Phone
Android, iOS
Someone on F11 do me a favor
run this
sysctl -a | grep microcode

It should report microcode version. Mine reports 174. it depends on CPU though, that's latest for 8700k.
Modded F11 #5:
machdep.cpu.microcode_version: 174
 
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Joined
Aug 17, 2017
Messages
189
Motherboard
Z370 AORUS Ultra Gaming
CPU
I7-8700K
Graphics
GTX 970
Mac
MacBook Pro
Mobile Phone
iOS
Has anyone already tested the latest BIOS released on 2019/03/26?

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